On Fri, 27 Mar 2015, Peter Zijlstra wrote: > > We could align the base on 8 bytes to gain an extra bit in the pointer > > and use that bit to indicate the running state. Then these sites can > > spin on that bit while we can change the actual base pointer. > > Even though tvec_base has ____cacheline_aligned stuck on, most are > allocated using kzalloc_node() which does not actually respect that but > already guarantees a minimum u64 alignment, so I think we can use that > third bit without too much magic. Create a new slab cache for this purpose that does the proper aligning? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>